* {
    margin: 0;
    padding: 0;
}
body {
    height: 2000px;
    background-color: #f5f5f5;
}
#videoList {
    padding-top: 50px;
}
.list {
    list-style: none;
    display: flex;
    width: 1200px;
    margin: 0 auto;
}
.list li {
    flex: 1;
    margin: 0 8px;
    background-color: #fff;
    transition: all .2s linear;
    cursor: pointer;
}
.list li:hover {
    -webkit-box-shadow: 0 15px 30px rgba(0,0,0,.1);
    box-shadow: 0 15px 30px rgba(0,0,0,.1);
    -webkit-transform: translate3d(0,-2px,0);
    transform: translate3d(0,-2px,0);
}
.list li .img {
    position: relative;
    height: 180px;
}
.list li .img img {
    display: block;
    width: 100%;
    height: 100%;
}
.list li .img .play {
    position: absolute;
    left: 20px;
    bottom: 10px;
    width: 32px;
    height: 20px;
    border: 2px solid #fff;
    border-radius: 12px;
    background-color: #424242;
    background-color: rgba(0,0,0,.6);
    color: #fff;
    -webkit-transition: all .2s;
    transition: all .2s;
    overflow: hidden;
}
.list li .img .play .icon-bofang {
    font-size: 16px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-47%, -55%);
}
.list li h2 {
    padding: 20px 15px;
    font-size: 14px;
    font-weight: 400;
    text-align: center;
    color: #333;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.popup {
    background-color: green;
}